<template>
	<div>
		<div class="search">
			<input  class="search-input" v-model="keyword" type="text" placeholder="输入城市名字或拼音"  >
		</div>

		<div class="search-content" ref='search' v-show="keyword">
			<ul>
				<li v-for="item of list" class="search-item border-bottom" @click='handleCityClick(item.name)'> {{item.name}} </li>
				<li class="search-item border-bottom" v-show="hasNoData"> 没有找到匹配数据 </li>
			</ul>
		</div>
	</div>
</template>

<script >
	import Bscroll from 'better-scroll'
	export default {
		name:'search',
		props: {
			cities:Object
		},
		data () {
			return {
				keyword:"",
				list:[],
				timer:null,

			}
		},
		methods:{
			handleCityClick (city) {
				this.$store.dispatch('changeCity',city) //这里的dispatch也可以是commit，对应store里面的直接用muatation
				this.$router.push('/');  //在 Vue 实例内部，可以通过 $router 访问路由实例。因此你可以调用 this.$router.push('路径')
			}
		},
		watch: {
			keyword () {
				if (this.timer) {
					clearTimeout(this.timer)
				};
				if (!this.keyword) {
					this.list = [];
					return;
				}
				this.timer = setTimeout( () => {
					const result = [];
					for (let i in this.cities){
						this.cities[i].forEach((value) => {
							if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
								result.push(value)
							}
						})
					}
					this.list = result;

				}, 100)
			}
		},
		mounted () {
			this.scroll = new Bscroll(this.$refs.search)
		},
		computed: {
			hasNoData () {
				return !this.list.length;
			}
		}
	}
	
</script>
<style lang="stylus" scoped>
@import '~styles/varibles.styl'
	.search {
		height: .72rem;
		padding: 0 .1rem;
		background-color: $bgColor;
	}
	.search-input {
		box-sizing: border-box;
		height: .62rem;
		width: 100%;
		line-height: .62rem;
		text-align: center;
		border-radius: .06rem;
		color: #666;
		padding: 0 .1rem;

	}
	.search-content {
		z-index: 1;
		overflow:hidden;
		position: absolute;
		top: 1.58rem;
		left: 0;
		right: 0;
		bottom: 0;
		background-color:#fff;

	}
	.search-item {
		line-height: .62rem;
		padding-left: .2rem;
		color: #666;
		background-color: #fff;
	}
	
</style>